PCManFM 1.3.2 in daedalus, and I see no third option in the right-click menu. Just folder or file are the choices.

You should be able to get to a boot device menu by pressing F12 or possibly some other key. The POST screen will tell you.

How did you prepare the live usb? Do you have another computer to test the usb stick to make sure it boots?

I'm bored so I'm making a proto-vuudo-32-bit system. I'll share it with you if you want to dress it up and take it out. Or you could do your own. One problem with this plan that I see is that there doesn't seem to be a 32-bit appimage of firefox. I spent zero time looking for a workaround to this issue.

The Procedure:
Boot your vuudo iso in qemu or vbox and run

dpkg --get-selections > pkglist64

Copy that file out of the VM so you can use it.
Edit the file to change :amd64 to :i386 and rename it to pkglist32 (or whatever you want)
Change the kernel to linux-image-686-pae and comment out the specific kernel version and the linux-libc-dev lines around it.
Comment out liblsan0, libtsan0 something-ubuntu-font and everything with refracta in the name. The ''dpkg --set-selections command below will puke on any missing packages and tell you in case I missed any. (like yad for instance)

Make a virtual disk.
Boot a live-iso and do a deboostrap install of 32-bit jessie in the virtual disk. I used a refracta_11 i386 iso for this.
Copy the pkglist32 into the debootstrap dir.
Chroot the new system and set root password, create user, add jessie-security line to sources.list, create or copy /etc/apt/apt.conf.d/00norecommends and run

apt-get update
apt-get install dselect
dselect update
dpkg --set-selections < pkglist32
apt-get -u dselect upgrade

It failed. I said "no" when it asked if I agreed to the license for firmware-ipw2x00. I think it's working the second time. I had to do
dpkg --clear-selections && dpkg --set-selections < pkglist32 to get the dselect-upgrade to work. (I think it's working. not done yet.)

Update: It installed, but it's not booting. First there was no initramfs and i got a kernel panic, now I made one and I get to initramfs prompt.
Time for sleep. Maybe I'll dream the solution.

I can't think of what you need to edit other than /etc/default/grub to enable os-prober so that when you run update-grub on your minimal partition, it will automatically add entries for all your other installed systems...   unless they have an encrypted root partition. In that case, you would need to create some menu entries in /etc/grub.d/40-custom. Write them to use the /vmlinuz and /initrd.img links in each of the systems so you don't have to keep changing it with every kernel upgrade.

Re: Vuu-do - I think greenjeans managed to remove all the hidden fat. He was ruthless. Boot the iso and get a list of installed packages to use as a guide for what to install. Dig into old posts to read about how it was made.

I think the last we heard about Star was in February.
https://dev1galaxy.org/viewtopic.php?pid=48432#p48432

115.8.0esr in excalibur works correctly. It has the "Firefox View" icon in the upper left.

128.3.1esr in the same excalibur also works correctly. This one has a folder icon in the upper left that says "View recent browsing..."

I tried the newer version both by closing the window and by killing firefox from a terminal. Both worked correctly.

@hdwolf:   THANKS!!!   I thought I fixed that a long time ago in refractasnapshot.

You said, "I used this command after doing that."

I ask, "What did you do before you ran that 'find' command?"  It should have worked.

If the problem is that these .service files can't do their job without systemd running, then the solution is to fork nvidia-suspend-common, the package that supplies these .service files. Someone needs to step forward to do the work and maintain it as updates come along. (It most likely will not be someone who is already packaging for devuan - there aren't enough of us.)

If you have pmount installed, spacefm will work without having to write a udev rule. I think it also works with udevil instead of pmount, but it's been years since I've tried it.

I checked to see if spacefm would open an encrypted external drive and it failed, but maybe I need to set some config for it. Alone, pmount in a terminal will ask for the passphrase for the encrpted volume.

One thing missing. Try it like this first.

apt-get --simulate purge <packages>

You should have gotten nm-tray and network-manager with lxqt. Make sure nm-tray is in your desktop startup apps.
Preferences -> LXQT Settings -> Session Settings -> Autostart

Did you install from the DVD without a network mirror? If so, you would be missing a lot of network related packages, even firefox.